Answer:
The options are given below:
A. the mail box rule.
B. commercial impracticability.
C. frustration of purpose.
D. true impossibility.
The correct option is B
Step-by-step explanation:
Commercial impracticability refers to a situation whereby an event occurs which makes the performance of a contractual duty excessively burdensome, unbearably difficult, or extremely expensive, for the party committed to such performance.
As can be seen from the scenario given above, Ron will be incurring a loss of $40 were he to continue with the contract, this loss has rendered the contract commercially impracticable, and therefore, this will be Ron's best argument in support of his petition to be discharged from the contract.